Preheat your oven to 400°F (200°C) and line a baking sheet with parchment paper.
Trim the woody ends off the asparagus and toss the spears on the baking sheet with 0.5 tablespoon of olive oil, a pinch of sea salt, and black pepper.
Roast the asparagus for 12-15 minutes until tender and slightly charred at the tips.
While the asparagus roasts, season the chicken breast evenly on both sides with the dried rosemary, dried thyme, remaining sea salt, and black pepper.
Heat the remaining 0.5 tablespoon of olive oil in a medium skillet over medium-high heat.
Place the chicken in the skillet and sear for 5-7 minutes per side, or until the internal temperature reaches 165°F.
In the final minute of cooking, add the minced garlic and lemon juice to the skillet, swirling to combine and spooning the pan juices over the chicken.
Plate the chicken alongside the roasted asparagus and cooked quinoa, drizzling any remaining lemon-garlic pan sauce over the top.